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For US, UK and EU SaaS founders building, scaling or modernizing B2B SaaS products. Multi-tenant architecture, subscription billing, RBAC, SSO, audit logs, SOC 2 readiness, all production grade. Senior Polish engineers who have shipped B2B SaaS to enterprise customers, not generalists guessing at compliance.
Trusted by teams across Europe
B2B SaaS is not a generic web app with login. Multi-tenancy, RBAC, SSO, audit logs, billing changes, dunning, plan migrations, customer admin, SLA dashboards, SOC 2 evidence collection. Each of these has trap doors that a generalist will miss. We work with founders post-MVP through Series B who need engineers who have shipped this exact shape of problem before, not engineers learning on your dime.
| Stage | Common need | Team shape | Engagement | Best for |
|---|---|---|---|---|
| Pre-MVP | Build first version | 3 to 4 (full-stack, designer, PM) | Fixed scope, 8 to 12 weeks | See MVP nearshore |
| Post-MVP, pre-Series A | Multi-tenancy, billing v2, first integrations | 3 to 5 (mostly backend, 1 frontend) | Dedicated team, 6 to 12 months | Going from 5 to 50 customers |
| Series A, scaling | SSO, RBAC, audit, SOC 2 readiness | 5 to 8 (backend, frontend, DevOps) | Dedicated team, 12 to 24 months | Selling to enterprise, 50 to 500 customers |
| Series B+, replatforming | Microservices migration, multi-region | 6 to 12 (senior backend heavy) | Dedicated team, 18 to 36 months | Multi-region, 500+ customers |
Honest take: we are strongest at the post-MVP through Series A stages where you need senior engineers who have shipped tenant isolation, Stripe Billing edge cases, RBAC and SSO before. For pre-MVP, see MVP nearshore. For staff augmentation into existing team, see staff augmentation Poland.
Strongest at the post-MVP through Series A stages. Vertical and horizontal B2B SaaS, API-first products and developer tools, regulated SaaS for fintech and healthcare. Not a fit for B2C consumer apps or marketplaces with native mobile.
Discuss your roadmap →Founder with industry expertise (legal tech, construction tech, healthcare admin), needs to scale from MVP to enterprise-ready. SSO, audit logs, multi-tenant, regional data residency.
Existing MVP, founder needs to add team features, role permissions, integrations (Slack, Salesforce, HubSpot) before next funding round. 6 to 12 month engagement.
SaaS for German mid-market, needs strict data residency (EU only), DPA-ready architecture, audit logs, fine-grained RBAC. We build for compliance from day one, not bolt on after.
API product with metered billing, free tier with rate limits, dashboard for API key management, usage analytics. Stripe Billing or Lago for usage tracking.
SaaS for EU financial firms, needs PCI compliance for card data, full audit trail, encryption at field level, SSO via Okta or Azure AD, sign-off workflows.
Row-level multi-tenancy with strict tenant scoping in every query, or schema-per-tenant for high-isolation needs. No tenant data leakage in joins or background jobs.
Stripe Subscriptions or Billing, plan upgrades and downgrades with proration, dunning flows, failed payment recovery, usage-based metering, EU VAT and US sales tax.
Role-based access control with custom roles, team-level permissions, resource-level scopes, permission inheritance. Not a hardcoded admin/user binary.
SAML SSO via WorkOS or BoxyHQ, SCIM provisioning for enterprise customers, social login for self-serve, MFA, password policies, session management.
Immutable audit trail of every privileged action (admin, security, data export, billing). Customer-visible activity logs. Foundation for SOC 2 evidence collection.
Internal admin for support to view tenants, run support actions, impersonate users (with audit), trigger refunds, change plans. Saves hours of support overhead.
Customer-facing REST or GraphQL API, OpenAPI spec, rate limiting per tenant, API key management, customer-configurable webhooks with retry and signing.
Sentry, Datadog or Grafana Cloud for monitoring, customer-facing status page, SLA tracking, basic error budgets. So you can sell uptime SLAs with confidence.
Dedicated team, monthly billing, full ownership of stack and roadmap with founder. For deep-dive on TCO, see cost of nearshore software development 2026.
1 senior backend, 1 mid full-stack, 1 mid frontend, 0.5 DevOps, 0.5 PM. Right for going from MVP to first 50 paying customers, 6 to 12 month engagement.
1 senior tech lead, 2 senior backend, 1 mid frontend, 1 DevOps, 1 PM. Right for adding SSO, RBAC, audit logs, SOC 2 readiness over 12 to 18 months.
1 staff engineer, 3 senior backend, 1 senior frontend, 1 senior DevOps, 1 QA, 1 PM. Right for multi-region, microservices migration over 18 to 24 months.
Current state of product, customer profile, scaling pain points, compliance requirements, timeline. We propose team composition, roadmap and budget within 5 working days.
1 senior architect plus 1 senior backend review your codebase, infrastructure and database schema. Report covers tenant isolation, security gaps, scalability ceilings, technical debt prioritization.
Based on audit, we propose 6 to 12 month roadmap, team composition (titles and senorities), milestones tied to business outcomes (SOC 2 readiness, SSO live, billing v2). You approve scope.
We assemble the team from our pre-vetted pool, you interview 2 to 3 per role, you pick. Selected team starts environment setup, repository access, first sprint planning.
2-week sprints, weekly demos, monthly business review with you. Code in your repos from day one, you own all IP. Tech lead reports to you, we handle HR and operations.
Row-level tenant isolation, RBAC with custom roles, SSO via WorkOS or BoxyHQ, immutable audit logs, customer admin with impersonation. Built for clients selling to enterprise customers who run real security reviews.
SOC 2 Type 1 readiness baked in: encryption at rest and in transit, access reviews, incident response runbooks, policies-as-code starter kit. Type 2 evidence collection is your responsibility, the technical foundation is ours.
See full case studyB2B SaaS primarily. Vertical SaaS (industry-specific tools), horizontal SaaS (CRM, project management, analytics), API-first products and developer tools. We do not specialize in B2C consumer apps, gaming or marketplaces with native mobile.
MVP is the first 8 to 12 weeks: ship a billable product. SaaS development is the ongoing 6 to 24 months after launch: multi-tenancy, RBAC, audit logs, SSO, SLA dashboards, customer admin, billing changes, team features. Different priorities, different team composition (more backend, less designer). See MVP development for the launch phase.
Yes for Type 1 readiness. We implement audit logs, RBAC, encryption at rest and in transit, secrets management, access reviews, SSO/SAML, basic monitoring. Type 2 requires 6 to 12 months of evidence collection, which is your responsibility. We give you the technical foundation and policies-as-code starting points.
We default to row-level multi-tenancy with strict tenant isolation in queries (Prisma row-level security or Postgres RLS). Schema-per-tenant for high-isolation requirements (regulated industries, large enterprise customers). Database-per-tenant for highest isolation (defense, healthcare). We pick based on your customer profile, not by default.
Yes. Stripe Subscriptions or Billing for most cases, plus webhooks, proration, plan changes, dunning, invoicing, tax (Stripe Tax or Avalara). For complex usage-based billing, metered events, hybrid plans, we use Stripe Billing or Lago. EU VAT and US sales tax compliance built in.
Yes. Most clients come with an MVP built by an offshore freelancer or no-code tool. We do a 1-week audit (architecture, security, scalability, code quality), report findings, then propose either a takeover-and-improve or full rewrite path. We are honest about which is right for you. See legacy modernization if a full rewrite is needed.
Tell me where the product is today and where you need it in 12 months. We propose team composition and roadmap within 5 working days.
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